Type-writer attachment.



W. E. BIRGPELD.

' TYPE WRITER ATTACHMENT. AAPPLICATION FILED NOV. 5, 1906'. BENBWBDSE1T.30, 1907.

Patented Dec. 22, 1908.

wi h1 eases UNITED sTATEs PATENT oEEIoE.:

WILLIAM EDWARD BIRGFELD, OF KENSINGTON, MARYLAND, ASSIGNOR TO UNDERWOODTYPEWRITER COMPANY, OF NEWVYORK, N. Y... A CORPORATION OF NEW JERSEY.

Naam/,119.

Specification of Letters Patent.

Patented nec. 22, loos.

4 Application led November 5, 1906, Serial No. 842,102. RenewedSeptember 30., 1907. Seal No. 395,182.

-To all whom it may concern:

Be it known that I, WILLIAM E. BIRGFELD, citizen of the United States,residing at Kensington, in .th'e county of -Montgomery andState-of'Maryland, have invented certain new and useful Improvements inType- Writer Attachments, of which the following typewriting machine andin is a specilication.

Thls invention contemplates certain new and useful improvements inattachments for typewriting machines, and it comprehends particularly animproved device that' maybe readilyfattached to and detached'from a4osition serve as a sto particularly a supplemental stop,` designe 'forlimiting'the movement of the, platen supporting carriage at differentpoints along its travel.

The invention also comprehends an im proved article. of'manufacture ofthis nature, which in its operation4 will be found advantageous'instopping or limiting the movement v of theplaten supporting carriage ofa typewriting machine ofthe peculiar character illustrated in theaccompanying drawings and hereinafter generally described, as I believeit supplies certain deficiencies in such machine, or at least rendersthe machine more useful vand capable of a vgreater range of adjustment,

and it will also be found that the invention is useful in typewritinwork where it is desired to stop the carriage when moved in' a directionopposite to that in which it moves when'printing, at pointsl near theleft hand end of the machine, so that a series of figures or the likemay be placed in a column at the left hand margin of a sheet.

With this and other objects in view, as-will morerfully appear as thedescripton'proceeds, the invention consists in certain constructions andarrangements of` parts of my' improved typewriter attachment hereinafterspecified and claimed.

For a full description of the invention and the merits thereofand alsoto acquire a knowledge of the details of construction of the means foreffecting the result, reference is to be had to the followingdescription and accompanying drawings, in which:

Figure 1 is a top plan view of so much of a certain design -oftypewriting machine as is necessary to obtain a proper understanding ofmyfinvention, one form of theiinve'ntion being shown applied thereto.Fig. 2 41s bodiesv a platen supporting carria e the .front portion l1 ofwhich supports a atch 2 which may be constructed or formed as thelaterally projecting end of thel latch'bar 3 pivoted-intermediate of itsends to rock in a vertical plane along the front edge of the front'bar1, said latch bar being provided at its other end with an upwardlyprojecting t or form of typewriting` may chlne to which my improvedattachment is Vshown applied in the present instance emfinger-piece 4 bywhich it maybe rocked soI as tolniove the latch 2 upwardly. As thecarriage moves-forwardly, or towards the rightof the machine, (in thedirection opposite to that in. which it moves when printf in this latch2 is designed to abut against a lock'5 which is mounted to slide upon arod6 extending in the plane of movement of the carriage and secured atits ,ends in any desired manner to the framework of the machine. j

The block 5 is provided with a forward projection 7 which is mountedl toslide upon a rod 8 similar to the rod 6 and in front of said rod 6, butin a slightly lower plane.- Tlie'extension 7 of the block 5 isprovidedwith a catch 9 designed to automatically clamp the block to the rod 8 soas to-hold the said block 5 at points along the said rods 6 and 8 andthereforecause the abuttn of the'latch 2 against said block at di erentpoints in the travel ofthe carria so as to limit the forward' traverseof said carriage at different points, according. lasit is desired todiscontinue the printing of characters at diierent vertical planes on`the sheet that is being written upon. On the machine hereinillustrated, the frontl rod 8 rovided with a stationary or immovablec'ol ar --10, whichv is so ositioned along said iod as to limit the sliing mqvement of the block 5 and its extension 7. This limit occursordinarily with this machine when the indicator on the carriage at thefront thereof points to the designation 40 along the front indicatingscale.' It is Very often necessary and desirable'tolimit the forwardmovement of the carriage to the 30x point or 20 point, or to otherintermediate points, but it is impossible to move the block 5 over farenough along the rods to. accomplish the stopping of the carriage atthese intermediate points. It is to overcome this difliculty that I haveconceived the present invention. l

My invention consists of a stopping device for limiting the forwardmovement of the carriage, that is, in the. direction opposite to that inwhich it moves when printing, and

in the present instance this stopping devicel is illustrated as of twoforms or embodiments. I shall first describe that form illustrated inFigs. 1, 2 and 3. As shown particularly in Fig. 3, this form of theinvention embodies a plate 11, which is transversely curved throughoutits len h, and which is provided with an edge ange 12 graduallythickened or slopin on its upper side as indicated at 13, said s opeterminating abruptly or producing the lug or shoulder 14. plate 11 isprovided at one corner with a atei-ally extending arm 15, which isreturned upon itselfin agradual curve to provide the hook extremity 1,6.In the practical operation of this form of the invention, the plate 11is merely positioned over the rod 6 and rests loosely thereon with itshook :'extren'lit-y 16 extending partially around the front rod 8 andwith its edge ange 12'projecting` in .'ne With the latch'Q, and with 1tsshoulder -14 projecting into the path of "said latch. One, nd of theplate 11 abuts against the block 5, while the side edge of the arm 15and its hook extension 16 abats against the 'extension 7 of said block.`Hence, it will be seen that the carriage will be stopped beforeits'latch ,2 comes in direct lcontact with the block 5. In other words,

it will be stopped by engagement with the lug or shoulder 14,-which isin advance of the block 5 and accordingly the forward with thelatch 2 atthe'desired point. The

plate 11 merely rests removably upon the rod 6, and can be readilyattached to or' de: tached from the two rods 6 and 8 as is clear fromthe foregoing description in'connection with the accompanying drawings.

In that form of the invention illustrated in At its opposite edge thecurved Figs. 4 and 5 the same generic Iprinciples are involved but theplate, here designated 11,

tube 11 is provided with a marginal flange 12a which preferably, is bentor returned upon itself as shown and. bent downwardly at its extremityalong the curved plate Aso as to reinforce the structure. The saidflange 12a, preferably slopes from one end tothe other and one of itsends is located, in applied position, in 'the path of movement of thelatch 2 so as to constitute a shoulder, substantially similar to theshoulder 14. The said end of the flange 12a is designated 14a and isbest seen in Fig. 4. The arm 17 which projects from one side of thecurved plate or split tube 11a preferably has spring characteristics andis bent at an intermediate point to produce two curved portions 19 and20, each of which constitutes in effect a hook designed to partiallyencircle the front rod 8. Beyond the hooks the arm 17 is extended toform the finger-piece 21. In the practical use of this form of theinvention the plate or tube 11a is removably attached to the rod 6 inadvance of thc'stop-block 5, that the shoulder or lug 14a constituted bythe end of the flange 12a lnay engage with the-latch 2'atthe desiredpoint and thereby limit' the forward traverse of the carriage. In theoperative position of this form 'of the invention, the uppermosthook orsocket 19 engages thefront rod 8, but if it.' be desired to turn thedevice into an inoperative position without entirely removing it fromthe typewriting machine, itis only necessary for the operator to graspthe finger-piece 21 and turn the curved plate or tube 11a about its.longitudinal axis on the rod 6, by moving the arm 17 upwardly. This willresult in so depressingv the flange 12a and its shoulder 14a that the`latter will be moved out ofthe path of the latch 2, while at the sametime the hook orsocket 19 willvbe disengaged from the rod 8 and bereplaced by the other hook 20, and the latter, by frictional engage mentwith the rod 8 will manifestly hold the device in an inoperativeposition on the two From the foregoing description, in connection withthel accompanying drawings, it

will be seen that I have provided a very simple device for the usefulpurposes hereinbefore specified, one that may be cheaply made, and onethat may be very. readily attached to and detached from the typewritingmachincaso that it will interfere in no wise withV the ordinary actionsof the machine jwhen not applied, and which may be instantly appliedwhenever desi-red in order to stop the carriage of the machine -at apoint beyond which the ordinary stop can not act.

It is obvious that any form of my improved auxiliary stop device may besubstituted for the ordinary stop devices employed on the typewritingmachine and be held as against movement in one direction by any desiredmeans, and that it'may remain upon the machine at all times withoutinterfering with the proper function of the Avarious parts, while at thesame time it is 'arranged to be readily detached whenever desired.

j Having thus described the invention, what is claimed as new is:

1. rlhe combination with a typewriting machine embodying a carriageprovided with a stopdatch and also embodying front and rear rods, and aslidable main stop de- `.vice on said rods, adapted for engagement fwiththe stop latch, of an auxiliary stop device adapted to loosely engagethe rear rod in advai'xce of said stop device and provided wit shoulderdesigned for location in the .jef movement of said latch, as and` forthe purpose set forth., Y

2; The combination with a typewriter embodying a carriage provided witha stoplatch and front and rear rods, and a vmain carriage stop slidableon said rods, of a curved plate arranged for removable support by therear rod and having a shoulder designed for engagement 'with saidstoplateh, said. plate being also provided with; means for engaging thefront rod, said means being arranged to engage the front.

rod at trwo different elevations whereby to hold the curved plate atdiderent radial adjustments on the rearl rod, and means for holding theplate as against longitudinal displacement at different points along therods, as and for the purpose set forth.

3. The combination with a typewriter embodying a carriage provided witha stoplat'ch and front and rear rods, and a mainv carriage stop slidableon said rods, of a plate arranged for removable sup ort by the rear rodand having a shoulder esigned for `engagement. with said stop-latch,said plate being provided with a forwardly pro jecting arm formed withtwo hook portions, one in a higher plane than thefother and extendedbeyond s'aid hook portions toA form a ngenpiece, said hook portionsbeing adapted to engage the front rod whereby the curved plate may beheld at dilferent axial adjustments on the rear rod.

et. The combination with a typewriting machine embodying `a carriageprovided with a stop. and also embodying front and rear rods, of a plateadapted to be removably `supported by the rear rod and provided with ashoulder designed for location in the path of movement of said stop, soas to limit the movement of the carriage in one direction, said platebeing provided with a forwardly projecting arm, and with means wherebysaid arm may engage the front rod and vriage provi hold the outer end ofsaid arm at two different elevations, as and forf'the purpose set forth.

'5. The combinationI with a typewritin '.iachine embodying a carriageprovide with a stop latch and also embodying front and rear rods, of acurved plate adapted to partially encircle the rear rod, said platebeing-formed at one edge with a lon itudinally extending flange 12,sloping rom one end to the' other, said flange being' formed at its highend with a 'shoulder arranged to contact with the stop latch and limitlthe movement of the'carriage in one direction, and 'said plate beingformed at one end with a forwardly extending arm adapted to engage thefront rod with the said arm at two different inclinations, as and forthe purposeset forth.

6. Ina typewriting machine having a earriage provided with a stop, thecombination of a rack, a stop upon the framework andhaving means toengage said rack and ad'- justablel along said rack in the path of thecarriage stop, to coperate with the carriage stop to arrest the returnof the carriage to begin a new line, and an 4auxiliary stop deviceadjustably mounted between lsaid stops to coperate with both thereof;the auxiliary stop preventing 'engagement of the other two stopswitheach other, 'but being removable to permit such engagement.

7. In a typewriting machine having a carriage provlded with a stop, thecomblnation of a rail on the framework, a stop mounted j on said railand adjustable -therealong to oooperate with the carriage stop to arrestthe return movement of 'the carriage to begin a new line, and anauxiliary stop device,

-mounted upon said rail between said stops, to -coperate with boththereof, and adjustable along said rail; the auxiliary stop pre-`venting engagement of the other two stops with eachother, but beingremovable to permit such engagement.

8. In a ty ewriting machine having a carded with a stop, the combinationof a4 rail on the framework, a stop mounted on said rail and adjustabletherealong to co' operate with the carriage kstop to arrest the returnmovement of the carriage to begina new line, and a stop device uponVsaid rail and interposed between. said stops to cooperate with boththereof, and adjustable together'with said rail stop; said interposedstop preventing engagement of the other. twostops with each other, andmeans being v'provided for moving the interposed stop out of the path.of the carriage stop.

9. In a typewriting machine having a carriage provlded with a stop,- thecombination ofa vrail on the framework, a stop mounted on said rail andadjustable therealong to cooperate withv the carriage stop to arrest thereturn movement ofthe carriage to begin a l' 4j i 907,119

new line, andl ia stop. device upon said rail and interposed betweensaid stops to c'o-l operate With:l both thereof,i and' adjustabletogether Withsa'idlrail stop'7 said interposed stop'preventingvengagement of .the other t'Wo stops'with 'each other, andmeans'being provided forv 'moving the interposed 'stop out of the pathLofthe carriage stop, and

both the rail "stop and the interposed Stop having openin son theirupper sides, to

. y Ileave the top' o the rail exposed.

10. An auxiliary. stop for attachment .to a

rail of a typewriting machine,.comprising a bodypor'tion-to fit uponsaid rail'and having a stop forengagement with the carriagestop, andalso having' means whereby it may be releasably held in'position'u'ponsaid rail, v

said .holding means comprising a lyielding arm extendingzfrom-sald bodyto engagea second rail lupon the machine.

11. An'auxiliary'st'op for attachment to .rail of a typewriting machine,comprisinga body portion to fit -upon said rail'and hav? ing a stop for'engagement with the carriage y 4stop, and also having means whereby itmay be releasably held in poition upon saidrail,

saidl holding means comprising a yielding I arm extending from said bodyvto engage a. 'second rail upon the machine grsaid body beingcylindrical and vrotatable 'upon the rail' vto, move its stopout oftheppath of the carria-ge stop. v i v12. -An auxiliary stopior;attachment to a rail of at pewriting machine, comprising va bodyportionto t upon said rail and hav-v ing' a stop for engagement with thecarriage Stop, and' also having means'whereby4 it may be releasably'heldin position upon said rail, said .holding means comprising a yieldingarm extending from said body 4to vengage va second rail uponthe-machine;-said body being'cylindrical and rotatablejupon the rail v riage stop;said arm having means engaging the second railfjto detain the body [inthe vposition in which its stop is inoperative.

In testimonywhereofl aiiix my 4signaturein presence of two Witnesses. I'iviLLnuiiJ now-ARD BIRGFELD. [L 8;]

1 Witnesses:

v 'Fnnnnmcx- S. S'rm'i,

